"Michele Simionato" <michele.simionato at poste.it> wrote in message news:95aa1afa.0403250455.6c6f882f at posting.google.com... > Here is an useful reference (including a Python implementation of > the Condorcet method): > > http://electionmethods.org/ > > Michele Simionato Thanks to you and Eric for the references. John Roth